
Exothermic and Endothermic Reactions
Students explore the energy changes that occur during chemical reactions and learn to interpret energy profile diagrams.
About This Topic
Students explore the energy changes that occur during chemical reactions and learn to interpret energy profile diagrams.
Key Questions
- How do we measure the energy changes that occur during chemical reactions?
- Why do some reactions release heat while others absorb it?
- How does the concept of activation energy relate to reaction profiles?
Active Learning Ideas
See all activities→Activities & Teaching Strategies
See all activities
Planning templates for Chemistry
More in Fuels and Heats of Reaction
Heat of Reaction and Heat of Combustion
Students define heat of reaction and heat of combustion, and examine how bomb calorimetry is used to measure the energy content of fuels.
2 methodologies
Hess's Law of Heat Summation
Students learn to apply Hess's Law to calculate the enthalpy changes of reactions that cannot be measured directly.
2 methodologies
Hydrocarbons as Fuels
Students investigate the fractional distillation of crude oil and the everyday uses of various hydrocarbon fractions.
2 methodologies
Methods to Increase Octane Number
Students examine the industrial processes used by oil refineries to improve fuel quality, including isomerisation and catalytic cracking.
2 methodologies